js截屏

<html><head>    <meta name="layout" content="main">    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />    <script type="text/javascript" src="https://lib.baomitu.com/jquery/1.9.0/jquery.min.js"></script>    <script type="text/javascript" src="https://lib.baomitu.com/html2canvas/0.5.0-beta4/html2canvas.js"></script>    <script  type="text/javascript" >        $(document).ready( function(){            $(".example1").on("click", function(event) {                event.preventDefault();                html2canvas(document.body, {                    allowTaint: true,                    taintTest: false,                    onrendered: function(canvas) {                        canvas.id = "mycanvas";                        //document.body.appendChild(canvas);                        //生成base64圖片數據                        var dataUrl = canvas.toDataURL();                        var newImg = document.createElement("img");                        newImg.src =  dataUrl;                        document.body.appendChild(newImg);                    }                });            });        });    </script></head><body>Hello!<div class="" style="background-color: #abc;">    計算機天堂測試html5頁面截圖    <br>jsjtt.com</div><textArea id="textArea" col="20" rows="10" ></textArea><input class="example1" type="button" value="button">生成界面以下:</body></html>  
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